Thresher aetd separator of graot



2 SheetsSheet 1.

'N. B. LUCAS.

Thrashing Machine.

Patented June 28, 1853.

n, D. C.

2 Sheets-Sheet 2.

N. B. LUCAS.

Thrashing Machine.

Patented June 28,1853.

UNITED STATES PATENT OFFICE.

NAPOLEON B. LUCAS, OF OTTER GREEK, ILLINOIS.

THRESI-IER AND SEPARATOR OF GRAIN.

Specification of Letters Patent No. 9,825, dated June 28, 1853.

To all whom it may concern Be it known that I, N. B. LUCAS, of OtterCreek, in the county of Jersey and State of Illinois, have invented anew and Improved Machine for Separating and Cleaning Grain; and I dohereby declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawing, making part ofthls specification, in which Figures 1 and 2, are side elevations of mymachine, combined with a thresher; Fig. 3, a top view' of the same;Figs. 4t and 5, end elevations; Fig. 6, a longitudinal vertical sectionthrough the center; and Figs. 7 and 8, views of detached parts.

Like letters refer to like parts in all the figures.

The grain, straw, &c., are conducted from the thresher p, by the endlessplatform a, thence carried along by the endless platform Z), while acylinder, 0r beater, cl, revolves just above it, and separates thestraw, if matted or damp, and shakes the grain from it, into thecavities, which I usually make on the surface of the endless platform.hen the straw, grain &c. have arrived at the upper end of the endlessplatform I), the straw is carried off by the endless platform 0, whichis placed at some distance from the platform Z), in order that any grainwhich may still be in the straw may fall out, but revolves with greatervelocity, so as to effectually carry the straw away, while the grain andchaff fall upon the sieve 7V1. The grain is cleaned as it falls throu disaid sieve by the strong blast from the fan 7, and conducted by theinclined plane m, into the receiving box 9*. The blast produced by thefan f is divided so that a portion passes into the space between theinclined plane m, and the sieve 71 and being arrested by the adjustablepartition 6, rises perpendicularly up through said sieve i17 lifting thechaff and impurities from the sieve, while the main portion of theblast, produced by the same fan, blows the chaff, &c. away over thesieve 727 where the light grain which is borne along by the blast lodgesand falls through upon the inclined plane 12, thence upon the sieve 717thence through said sieve upon the inclined plane 2', and by itconducted into the receiving box 9 A portoin of the blast from the fan7, may be admitted through upon this gram by the adjustable partition 6,so regulated as not to blow away the light grain as it falls, but toremove garlic or other impurities, which may be mixed with it. And themore gentle blast from the second fan f completely cleans the said lightgrain. The receiving boxes g and g", are emptied by a spiral shaftin thesame, which is put in motion, when required, by running a belt upon it.

By the above described arrangement, I am enabled to separate the lightgrain from the sound grain; at the same time cleaning and saving thisinferior grain by the same operation, in which I cleanthe sound grain; amatter of much importance, especizflly in seasons when the grain isblighted.

lVhat I claim as my invention and desire to secure by Letters Patent,is-- The auxiliary screen 762, placed in a horizontal position, ornearly so, and projecting from the rear end of the inclined screen 7L soas to be out of the axis of the blast over the said screen if, for thepurpose of catching and saving the blighted and lighter kernels of grainwhich may be blown beyond the rear extremity of the said inclined screen7L1, substantially as herein set forth.

The above specification of my improved machine for separating andcleaning grain signed by me this 21st day of January 1852.

N. B. LUCAS.

Witnesses:

B. B. HAMILTON, DANIEL T. LAMB.

